Algebraic_​loop_Solut​ion_SIMULI​NK

Hi !

I want to implement the following pseudo-code in SIMULINK:

q^0 = q_init, i = 0
IF q^i ! = q_final
    q^(i+1) = q^i + alpha * F(q^i)
    i = i + 1
ELSE return <q^0,q^1 ... q^i>

The main problem is, that F(q^i) is a function of the current q and is calculated in every iteration. When trying to impement this in SIMULINK, I run into an algebraic loop that cannot be solved.

What is the proper way of solving the problem (in SIMULINK) ?

Thank you !

Miklos